Shimizu Hideyuki, Park Kyu Hyung, Otani Hiroyuki, Aoyagi Shinobu, Nishinaga Tohru, Aso Yoshio, Kim Dongho, Iyoda Masahiko
Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo, 192-0397, Japan.
Department of Chemistry and Spectroscopy Laboratory for, Functional π-Electronic Systems, Yonsei University, Seoul, 03722, Korea.
Chemistry. 2018 Mar 12;24(15):3793-3801. doi: 10.1002/chem.201705565. Epub 2018 Feb 12.
A Saturn-like 1:1 complex composed of macrocyclic oligothiophene E-8T7A and C fullerene (C ) was synthesized to investigate the interaction between macrocyclic oligothiophenes and C in solution and the solid state. Because the Saturn-like 1:1 complex E-8T7A⋅C is mainly stabilized by van der Waals interactions between C and the sulfur atoms of the E-8T7A macrocycle, C is rather weakly incorporated inside the macro-ring in solution. However, in the solid state the Saturn-like 1:1 complex preferentially formed single crystals or nanostructured polymorphs. Interestingly, X-ray analysis and theoretical calculations exhibited hindered rotation of C in the Saturn-like complex due to interactions between C and the sulfur atoms. Furthermore, the photoinduced charge transfer (CT) interaction between E-8T7A and C in solution was investigated by using femtosecond transient absorption (TA) spectroscopy. The ultrafast TA spectral changes in the photoinduced absorption bands were attributed to the CT process in the Saturn-like structure.
合成了一种由大环低聚噻吩E-8T7A和C富勒烯（C）组成的类似土星的1:1配合物，以研究大环低聚噻吩与溶液和固态中的C之间的相互作用。由于类似土星的1:1配合物E-8T7A⋅C主要通过C与E-8T7A大环的硫原子之间的范德华相互作用而稳定，C在溶液中相当弱地掺入大环内部。然而，在固态中，类似土星的1:1配合物优先形成单晶或纳米结构的多晶型物。有趣的是，X射线分析和理论计算表明，由于C与硫原子之间的相互作用，C在类似土星的配合物中旋转受阻。此外，通过飞秒瞬态吸收（TA）光谱研究了溶液中E-8T7A和C之间的光诱导电荷转移（CT）相互作用。光诱导吸收带中的超快TA光谱变化归因于类似土星结构中的CT过程。
